406720-91-0Relevant academic research and scientific papers
Stereoselective Synthesis of (E)-2-En-4-ynoic acids with Ynolates: Catalytic conversion to tetronic acids and 2-pyrones
Yoshlkawa, Takashi,Shindo, Mltsuru
supporting information; experimental part, p. 5378 - 5381 (2010/02/28)
"Chemical Equation Presented" A highly torquoselective olefinatlon of alkynoates to provide functionalized tetrasubstltuted olefins, (E)-2-en-4-ynoic acids, Is described. Addition of Bronsted acids dramatically switched the mode of the Ag(l)-catalyzed cyclization of the resulting enyne carboxylic acids to give either tetronic acids or 2-pyrones.
Triphenylphosphine-mediated reduction of electron-deficient propargyl ethers to the allylic ethers
Tsai, Ming-Shan,Rao, U. Narasimha,Wang, Jeng-Rong,Liang, Chung-Hao,Yeh, Ming-Chang P.
, p. 869 - 876 (2007/10/03)
Semihydrogenation of α,β-unsaturated ynoates and -ynones bearing a γ-alkoxy group can be performed using triphenylphosphine and water. α,β-Unsaturated ynoates were reduced to a mixture of cis and trans α,β-unsaturated enoates, whereas, ynones were reduced to trans α,β-unsaturated enones as the only products.
